The Multiquip R524988 Radiator Filler Cap is a genuine OEM component designed for AP6 and AP8 series water pumps. As a direct OEM replacement, this cap is manufactured to the exact pressure specification required by the cooling system on these machines, ensuring proper pressurization and seal integrity from the moment it is installed. Sourced directly through authorized Multiquip supply channels, the R524988 is the correct part for AP6 and AP8 equipment operators who need a dependable, spec-matched replacement.
Key Features
- OEM Pressure Rating: — Manufactured to the exact pressure specification for the AP6 and AP8 cooling systems, maintaining the designed operating pressure range of the radiator circuit.
- Secure Sealing Surface: — Engineered to seat flush against the radiator filler neck, delivering a consistent, leak-free seal without requiring any modification to the filler neck or housing.
- Confirmed AP6 and AP8 Fitment: — Verified genuine OEM replacement for Multiquip AP6 and AP8 water pump models — verify your model code before ordering.
- Cooling System Integrity: — A correctly rated filler cap maintains the pressurized cooling circuit that prevents overheating under continuous pump operation; a failed or incorrect cap can cause coolant loss and engine damage.
- Fuel and Fluid Safety Compliance: — A properly functioning radiator cap is a pressure-relief safety component; using the correct OEM-rated cap prevents dangerous coolant venting and maintains system pressure within safe design limits.
The radiator filler cap seals the cooling system and maintains the correct internal pressure within the radiator circuit. By holding pressure above the coolant's atmospheric boiling point, it raises the effective boiling temperature of the coolant and prevents overheating during sustained operation. When a filler cap fails — whether through a weakened spring, a cracked seal, or an incorrect pressure rating — the cooling system loses its ability to hold pressure, leading to premature coolant boil-off, overheating, and potential engine damage.
Part Details
| Part Number | R524988 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Radiator Filler Cap |
Compatibility & Fitment
| Name | Model |
|---|---|
| Water Pumps | AP6 |
| Water Pumps | AP8 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
